#!/usr/bin/env pythonimport sys
if __name__ =='__main__':iflen(sys.argv) !=3:print(sys.argv[0],'input_file output_file')
sys.exit(1)
with open(sys.argv[1])as f:
ifile = f.read()if ifile !='This is a binary output file.\n':print('Malformed input')
sys.exit(1)
with open(sys.argv[2],'w')as ofile:
ofile.write('This is a different binary output file.\n')